According to Adweek, the 12 employees at Peanut Butter & Co. decided to launch a social media effort to get people to download a buy-one-get-one-free coupon for National Peanut Butter & Jelly Day, which falls on April 2, in case you were wondering. The coupons were available on PB&Co’s Facebook and Twitter page, but also plugged on an accompanying Vine video showing how to make the perfect PB&J sandwich. It went went viral to the tune of 300,000 impressions. That led to more than 6,000 coupons downloaded.